The sandwiches were turned over to authorities in the US Customs and Border Protection Service.

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Last week, Ecuadorean President Rafael Correa ordered US customs attache Armando Astorga to leave on similar charges.

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Virtual border guards are also being tested, with the US Customs and Border Protection trialling a kiosk at Dennis DeConcini Port in Nogales, Arizona, a border crossing between the US and Mexico.

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The director of US Immigration and Customs Enforcement (ICE), John Morton, said the case was significant because the girls were repeatedly victimised over several years and transported to many places.

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They were nothing to do with us whatsoever but Customs seemed to believe they could bill my innocent company for the crimes of people we had never met or even had the means to know about.

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On the Mexican side of the border, a team of customs agents asked us to step out of the car.

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The film fell foul of censors in Germany, the UK and the US - where it was seized by customs officials ahead of a planned screening at the New York Film Festival.

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The customs officers waved the delivery van through and sent us on our way.

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And even apart from regulation, the customs change in different locales, so it helps to have assets in Europe and US. Our customers are big and global and they are trying to figure out how to manage risk globally.

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